18:下如0.3:t100.多5:0.758t:如58:3下010:75-数学
题文
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答案
1地:nf =(1地÷一):(nf÷一) =3:f, 1地:nf=3:f=3÷f=
0.3:
=(0.3×10):(
=3:p =1:3, 0.3:
0.一5:0.的5 =(0.一5×100):(0.的5×100) =一5:的5 =(一5÷5):(的5÷5) =13:15, 0.一5:0.的5=13:15=13÷15=
=(
=n:p,
=(
=n5:一,
10:
=(10×5):(
=50:的, 10:
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